[Paraview] ParaView Scripting

[Deij, Menno]

Hi Stefano,

In addition to the good suggestions by Sebastien, you can get more information for each Python object using the following approaches:

Let's say your object is called 'obj'

1. Get help:

help(obj)

2. You can list all its attributes (properties & functions) using:

dir(obj)

or, better readable

for element in dir(obj):
    print element

3. Then, if your object is a SourceProxy (maybe even if it's a Proxy, I'm not sure), you can list its properties like so:

for p in obj.ListProperties():
    print p, obj.GetProperty(p)

4. Lastly, in the help on an object you can sometimes see that not all documentation is provided and you are referred to a vtk* object. Download the source code from ParaView and view the type header file to see the full information.

Good luck,

Menno




dr. ir. Menno A. Deij
Software Engineer
Maritime Simulation Group
E mailto:M.Deij at marin.nl
T +31 317 49 35 06

MARIN
2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands
T +31 317 49 39 11, F , I www.marin.nl

-----Original Message-----
From: paraview-bounces at paraview.org [mailto:paraview-bounces at paraview.org] On Behalf Of Stefano Charissis
Sent: Friday, March 02, 2012 3:27 AM
To: Sebastien Jourdain
Cc: paraview at paraview.org
Subject: Re: [Paraview] ParaView Scripting

Hi Sebastien,

Thank you for your recommendations.
I have already been through all those resources and I was not able to extract very much useful information from them. The the 'trace' suggestion seems promising. I can't quite get it to do what I want, but I'm sure it'll prove useful in the future.

This is what using the trace gave me:
--------------------------------------------------------------------------------------------------------
try: paraview.simple
except: from paraview.simple import *
paraview.simple._DisableFirstRenderCameraReset()

a3dResults_vtu = XMLUnstructuredGridReader( FileName=['/home/stefano/workspace/TestSimulations/3dpropagation/output/vtk_output/3dResults.vtu'] )
a3dResults_vtu.PointArrayStatus = ['V_000000', 'V_000001', 'V_000002', 'V_000003', 'V_000004', 'V_000005']

# From here, I don't even know how to do what I want to do manually
# At this point if I am in Paraview and I hit 'Animate' then it will animate V_00000 only. But, in fact, V_000000 is timestep 0 of V, V_000001 is timestep 1 of V, etc...
# So I essentially want it to either interpret the arrays as such or output a series of vtu files which I can then hopefully open 'together' (output*.vtu) and animate that...?
--------------------------------------------------------------------------------------------------------


Also. I would still like to know where I can look up the functionality of, for example, paraview.simple, for the future.

Stefano

________________________________________
From: Sebastien Jourdain [sebastien.jourdain at kitware.com]
Sent: Friday, 2 March 2012 12:03 PM
To: Stefano Charissis
Cc: paraview at paraview.org
Subject: Re: [Paraview] ParaView Scripting

Hi Stefano,

you can give a look at http://paraview.org/Wiki/ParaView and more precisely on:

http://paraview.org/Wiki/ParaView#Python_Scripting
http://paraview.org/Wiki/ParaView/Python_Scripting
http://paraview.org/Wiki/Python_GUI_Tools

Hope this could give you more insight... The trace can help you
convert UI interaction into script which can be manually tweaked for
your custom purpose.

Seb

On Thu, Mar 1, 2012 at 7:09 PM, Stefano Charissis
<S.Charissis at victorchang.edu.au> wrote:
> Hi all,
>
> My group has just started using ParaView in an attempt to visualise the output of an open-source application we are using. The app outputs a single .vtu file which has multiple arrays, each representing the data at every time step of the simulation. I cannot animate this as it does not have any time information. I could not find the solution online and nor could I find any documentation for the python scripting. I tried that figuring that if I could seperate the vtu into multiple (ie. 0.vtu, 1.vtu, etc) then I could automatically produce animations.
> Does anyone know how this can be achieved?
>
> And, more generally, how can one go about learning ParaView scripting? I don't mind what language I have to use, I just want a comprehensive guide and documentation. I tried buying the book, but it is out of stock.
>
> Thanks,
> Stefano
>
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